Three more climbers have died on Mount Everest, taking the death toll to seven in a week - more than the total for the whole of past year.
Cash's death comes after more than 200 mountaineers were trapped on the trail for several hours after a window of clear weather sparked a bottleneck of climbers looking to reach the peak.
An Austrian climber died on the northern Tibet side of the mountain, his expedition organiser said.
Two mountaineers - one of whom was American - died while descending Mount Everest Wednesday due in part to an issue of overcrowding near the summit at almost 30,000 feet.
"Before you reach the summit, you have to wait and every minute counts at the height", she said.
"Our guides tried to help but he died soon after", Murari Sharma of Everest Parivar Expedition told the BBC. "Sherpa guides carried him down to Camp 4 but he breathed his last there", Keshav Paudel of Peak Promotion said of Bagwan to AFP.
Deaths earlier this week included American Don Cash, a Utah father who, according to an NBC interview with his family, signed a "waiver that his body would be left in the event of death".
When a line starts to back up, "you're changing your natural pace so you're spending more time in this high altitude zone than might be necessary if you were climbing 10 to 15 years ago", he said.
Nihal Ashpak Bagwan (27), had just achieved his dream of climbing Mount Everest, but he did not live to enjoy the achievement.
Kristyn Carriere, who is from Edmonton but moved to the United Kingdom a decade ago, says Fisher passed away shortly after summiting.
The tragedies come amid the feats of Nepalese Sherpa climber Kami Rita, who broke his own record in quick succession.
In addition to the risks of altitude sickness and exhaustion, there have been a number of avalanches on the mountain over the year, including one set off by the catastrophic 7.8 magnitude natural disaster that struck Nepal in 2015.
Before he headed for the summit, Mr Cash texted his son Tanner that he felt "so blessed to be on the mountain that I read about for the last 40 years". The woman's expedition agency, Arun Treks and Expeditions, said she died of "exhaustion".
They were part of hundreds of foreigners and their Sherpa guides attempting to scale Everest and other Himalayan peaks during the popular spring climbing season, when only a few windows of good weather each May allow them the best chance of success.
This year, Nepal released more permits than ever, plus 140 more permits from the Tibetan side of the mountain - 2019 might beat last year's record of most people reaching the top. Climbers have expressed concerns of overcrowding on the world's highest mountain after photo (above) showed a long queue to reach the summit.